ON AN EXPERIMENTAL TEST OF PREQUANTUM THEORY OF CLASSICAL RANDOM FIELDS: AN ESTIMATE FROM ABOVE OF THE COEFFICIENT OF SECOND-ORDER COHERENCE
Abstract
We show that quantum probabilities for photon detection can be reproduced by a model in which classical random fields interact with detectors of the threshold type. This approach is applied to the old problem of distinguishing classical and quantum light sources with the aid of the coefficient of second-order coherence g(2)(0) (the problem of "existence of photon"). In our classical random field model, we obtain an estimate of this coefficient implying that it becomes strictly less than one for sufficiently small value of parameter , where
is the average energy of pulses (photons) emitted by a source and
is the detection threshold. This prediction can in principle be tested experimentally. Thus in the presented model experimental technicalities (such as e.g. the detection thresholds) are lifted to the level of the fundamental entities of theory.